Electricity Costs
What your appliances, your bill and your kilowatt-hours really cost.
- Find out what an appliance costs to runAppliance electricity costSee what it costs to run any appliance per hour, per month and per year, using your own state electricity price.Open calculator
- Turn kilowatt-hours into dollarskWh to dollars converterTurn kilowatt-hours into dollars, or dollars into kilowatt-hours, at your state average price or your own rate.Open calculator
- Estimate your monthly electric billMonthly electric bill by stateEstimate your electric bill from the kWh you use and your price, and see how it compares with the average home in your state.Open calculator
- See what an electric space heater costs to runElectric space heater costFind out what your space heater costs to run, and what the same heat would cost from a gas furnace or a heat pump.Open calculator
- See what it costs to charge an electric car at homeElectric car charging cost by stateFind out what charging an electric car at home costs where you live, and compare it with a gasoline car if you want to.Open calculator
- Find out what your pool pump costs to runPool pump running costWork out what your pool pump costs to run, and check whether a more efficient pump would pay back its price.Open calculator
How electricity cost is calculated
Electricity is sold by the kilowatt-hour (kWh). One kWh is the energy used by a 1,000 watt appliance running for one hour. To find what something costs, convert its watts to kilowatts, multiply by the hours it runs, and multiply the result by your price per kWh.
The price per kWh is not the same everywhere or on every bill. It depends on your state and utility, and some utilities change it with the amount you use or the time of day. The calculators here start from the U.S. Energy Information Administration state averages and let you replace them with the rate on your own bill.
If you are not sure where to begin, use the appliance calculator to price one device, the kWh converter to turn any amount of energy into dollars, and the monthly bill calculator to see how your usage compares with the state average. The other calculators in this section apply the same arithmetic to a specific question, such as charging a car or running a pool pump.
See how we handle data and formulas on the methodology and sources page.